<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>

</head>
<body>

<div id="app">
    <span v-bind:title="message">
        鼠标悬停查看信息
    </span>
    {{message}}
</div>

<div id="app2">
    {{message}}
</div>


<script src="https://cdn.jsdelivr.net/npm/vue@2.5.21/dist/vue.min.js"></script>
<script>
    var vm = new Vue({
        el:"#app",
        data:{
            message:"hello,vue!"
        }
    });
    var vm = new Vue({
        el:"#app2",
        data:{
            message:"hello,vue!"
        }
    });

</script>
</body>
</html>